9:45 AM - 10:00 AM
[2M01] Investigation on distribution of radioactive substances in Fukushima
(7)Estimation of exposed dose by measurement of air dose rate
Keywords:Fukushima Daiichi Nuclear Power Plant accident, external exposure, effective dose, personal dose, life pattern
In order to validate the accuracy of the exposure dose estimation model based on air dose rate measurements and life patterns, the estimated doses and personal doses were compared using air dose rate data, life pattern data and personal dosimeter data obtained in 2019 and 2020. The estimated doses and personal doses showed significant correlation with a certain degree of error. Uncertainties in the model parameters (air dose rate, reduction factor, background air dose rate and conversion factor) and personal dosimeter measurements were examined as factors contributing to the error.